$modus 0: smartphone
$modus 1: smartphone
Betula populifolia
Betula populifolia Marshall [Accepted]
Betulaceae Betuloideae
1 141321 Betula populifolia Marshall
Helen Sharp, Water-color Sketches Amer. Pl.: (1888-1910) [Helen Sharp]
1 141321 Betula populifolia Marshall
A. Lounsberry, E. Rowan, A guide to the trees: t. 150 (1900) [E. Rowan]
1 141321 Betula populifolia Marshall
C.S. Sargent, Silva, vol. 9 : t. 450 (1898) [C.E. Faxon]
1 141321 Betula populifolia Marshall
F.A. Michaux, N. Amer. Sylv., vol. 2 : t. 71 (1819) [P. Bessa]